In order to be effective, a liaison shall operate in both directions, with suitable reciprocal arrangements. The desirability of liaison shall be taken into account at an early stage of the work.

The liaison organization shall accept the policy based on the ISO/IEC Directives concerning copyright (see ISO/IEC Directives, Part 1 (Procedures for the technical work) (2011, 8th ed.), subclause 2.13), whether owned by the liaison organization or by other parties. The statement on copyright policy will be provided to the liaison organization with an invitation to make an explicit statement as to its acceptability. The cooperating organization is not entitled to make any charges for documents submitted.

Organizations that make an effective contribution to the work of the technical committee or subcommittee for questions dealt with by this technical committee or subcommittee. Such organizations are sent copies of all relevant documentation and are invited to meetings. They may nominate experts to participate in a Working Group/Project Team (see ISO/IEC Directives, Part 1 (Procedures for the technical work) (2011, 8th ed.), subclause 1.12.1).

The liaison organizations shall be international or broadly based regional organizations working or interested in similar or related fields. Technical committees and subcommittees shall seek the full and, if possible, formal backing of the organizations having liaison status for each document in which the latter is interested.

Liaisons are established by the Chief Executive Officer in consultation with the secretariat of the technical committee or subcommittee concerned. They are centrally recorded and reported to the technical management board.

Category C liaisons are proposed by JTC 1 to the ITTF after receiving a recommendation from the appropriate JTC 1 subsidiary body, i.e. an SC (or WG reporting directly to JTC 1). Each request for liaison status forwarded to JTC 1 from an appropriate JTC 1 subsidiary body must contain a statement of expected benefits and responsibilities accepted by both the JTC 1 organisation and the organisation requesting liaison status.

Representatives shall have the right to participate in the meetings of the subcommittee or working group whose work they have been designated to follow but shall not have the right to vote. They may contribute to the discussion in the meetings, including the submission of written contributions, on matters within the competence of their organisation.

Category D Liaison- Can only be established with ISO or IEC Working Groups/Project Teams

Definition
The ISO/IEC Directives defines Category D Liaisons as organizations that make a technical contribution to and participate actively in the work of an IEC working group, maintenance team, or project team.